<template>
    <div class="row">
        <!-- 展示用户列表 -->
        <div v-show="users.length" class="card" v-for="user in users" :key="user.login">
            <a v-bind:href="user.html_url" target="_blank">
            <img :src="user.avatar_url" style='width: 100px'/>
            </a>
            <p class="card-text" v-text="user.login"></p>
        </div>
        <!-- 展示欢迎词 -->
        <h1 v-show="isFirst">欢迎使用！</h1>
        <!-- 展示加载信息 -->
        <h1 v-show="isLoading">加载中...</h1>
        <!-- 展示错误信息 -->
        <h1 v-show="errorMsg">{{errorMsg}}</h1>
    </div>
</template>

<script>
    export default {
        name:'List',
        data() {
            return {
                isFirst:true,
                isLoading: false,
                errorMsg:'',
                users:[]
            }
        },
        methods:{
            ListUser(users){
                console.log("我是List组件，我收到了数据:",users);
                this.users=users;
                this.isFirst=false;
            }
        },
        //生命周期钩子函数
        mounted(){
            this.$bus.$on('getUsers',this.ListUser);
        }
    }
</script>

<style scoped>
    h1{
        text-align: center;
    }
    .album {
        min-height: 50rem; /* Can be removed; just added for demo purposes */
        padding-top: 3rem;
        padding-bottom: 3rem;
        background-color: #f7f7f7;
    }

    .card {
        float: left;
        width: 33.333%;
        padding: .75rem;
        margin-bottom: 2rem;
        border: 1px solid #efefef;
        text-align: center;
    }

    .card > img {
        margin-bottom: .75rem;
        border-radius: 100px;
    }

    .card-text {
        font-size: 85%;
    }
</style>